The Ohio Democrat. (Logan, O. [Ohio]) 1886-1906, 1887-02-26
SCIENCE AND INDUSTRY.

There are five thousand working
girls in Richmond, Va, who receive
five dollars week.
One hundred members Of the
Brooklyn police force are said to be
Knights of Labor.
The Colorado Coal and Iron Com
pany has two thousand men at work at
the present time.
"A new attachment to the micro
scope has been devised, .he object of
which is to observe the melting points
Of minerals while under the process Of
examination. Boston Globe.
"A Japanese has invented method
Of weaving carpets with feathers. The
feathers are reduced to silky state by
the use of chemicals, and then woven
like ordinary cotton.
C-Hat manufacturing which is all
ready an extensive business in Haver-
hill, is to be introduced in Lynn, and
possibly other large shoe towns where
leather for Innings is manufactured, thus
increasing the industry of those places.
Boston Journal
"A new style of paving block, for
which are claimed some special advan-
tages, is composed of hollow iron shell
filled with any desired concrete, the
shells being arched underneath, and for
street paving are some four inches wide
and from ten to twelve long.-M Y.
Herald.
"A new form of railway seat spring
has been devised in England and is
highly spoken of The entire seat is
carried on q coiled spring of peculiar
form, and is free to move in all direc-
tions. so that every jerk and oscillation
which the car can receive is perfectly
taken up.
"A German engineer named Hem
kels has devised Il ventilating window
pane which admits fresh air while pre-,
venting draught. Each square meter
Of glass contains 5000 minute holes of
conical shape, widening toward the
| inside. Many of the German hospitals
have already adopted the new device.
1t is stated in Scotch paper that an
iron worker of Aberdeen has adopted u
new method of pudding reservoirs,
etc, with clay. Instead of using the
clay in the customary wet and plastic
state, he drys and pulverizes it before
application. 1t is claimed by this sys-
tenn that greatly improved results can
| be obtained.
| The diminished cost of production
in metal work was illustrated recently
| by DR.. John Percy in an address to the
British Iron and Steel Institute, by the
statement that gross of steel pens,
! formerly costing thirty-five dollars.
might now be produced for eight cents.
The cost of making gold chains has
been reduced to an eighth of what it
was.
The oranges produced for market
in the California counties of Los Ange-
les and San Bernardino number over
twenty million year. About two
hundred cargoes go east. The net
yield of an acre with sixty orange trees
on it is estimated at $3.50 per annum,
but unfortunately the crop is not al
ways reliable, and sometimes Whole
groves have been abandoned to varie-
ty of pests.-Chtcago Times.
The annual report of the statistics
of the industries of Pennsylvania says,
under the head of lumber and its prod
ucts,. that there. are employed therein
25,575 persons, whose average weekly
wages are Sc. 80 each. There are 30S
tanneries, with over 5000 employees, to
whom are paid $9,O47,327 in wages.
Of street passenger railways there are
reported A, with 4,39S employees, whose
yearly wages average 1857 each. Phil
adelphia contributes 18 of these capsr
psnies.